The evil eye is a widespread belief in the power of an envious gaze to cause harm or misfortune.

The core concept of the evil eye (or *mal de ojo*, *ayin hara*, *nazar*) centers on the idea that an individual, intentionally or unintentionally, can inflict harm upon another merely by looking at them, especially if that gaze is accompanied by feelings of envy, jealousy, or admiration that is perceived as excessive. This harm can manifest in various ways, from minor inconveniences and bad luck to serious illness, loss of property, or even death. Anthropological studies highlight this belief as a cultural universal, though its specific manifestations and attributed causes vary. It often arises in societies where resources are perceived as limited, and boasting or excessive display of wealth or happiness is discouraged, as it might attract envious attention.